Boiler-feeder



No. 245,778. Patented Aug. 18,1881.

UNITED STATES PATENT OEEICE.

BENJAMIN BRAZELLE, OF STQLOUIS, MISSOURI.

BOILER-FE'EDER.

SPECIFICATION forming part of Letters Patent No. 245,778, dated August16, 1881.

Application filed May 7, 1881.` (No model.)

To all whom it may concern Be it known that I, BENJAMIN BEAZELLE, of St.Louis, in the county of'St. Louis and State ot' Missouri, have inventedcertain new and usel'ul Improvements in Boiler-Feeders, of whichimprovements the following is a specication.

The object of my invention is to provide a boilerfeeder of simple andinexpensive construction, having the capacity ot' either continuous orintermittent operation during the Working of a steamengine, without theemployment of any members deriving motion from moving parts of theengine, and having the further capacity of regulation, eitherautomatically or by hand, in accordance with the requirements ot'supply.

'lo this end my improvements consist in the combination ot' asteam-cylinder having at each of its ends a port adapted to communicatewith one end of the cylinder of an ordinary steam-engine, a pistonworking in said steam-cylinder, and a piston-rod secured to said pistouand forming the plungerof a pumpbarrel in line with said steam-cylinder.

My improvements further consist in the combination, with a direct-actingsteam-pump operated by steam supplied from the cylinder of asteam-engine, of a oat connected to aregulating-valve located in one ofthe steam supply pipes of the pump.

The improvements claimed are hereinafter more fully set forth.

The accompanying drawing is a vertical central section through aboiler-feeder embodying my improvements.

The cylinder A of my improved boiler-feeder is o't' small diameterrelatively to that of the steam-engine in connection with which it is tobe employed, and is bored out truly to receive a piston, B. Two ports, ca', are formed in the cylinder A, one adjacent to each of its ends, eachport passing through a nozzle, which is tapped or iianged to admit ofits connection with a steam-supply pipe, said supply-pipescommunicating,respectively, with the opposite ends of a steam-enginecylinder. A pistonrod, B', is secured to or formed in a piece with `thepiston B, and, passing through an opening in one end of the cylinder, towhich opening it is neatly fitted, enters and serves as a plunger for apump-barrel, A', in line with the cylinder A, and, by preference, castin apiece therewith. The cylinder and pump-barrel are closed byremovable bonnets A2 A3; and port-s c2 a3, tted to communicate,respectively, with a suction and a delivery valve, are formed in thepump-barrel.

In operation the piston B and plunger B will be continuouslyreciprocated during the movement of the steam-engine from which thecylinder A receives steam, a stroke in each direction being madecoincidently with the corresponding stroke ofthe engine-piston by aportion of the steam which e'ects said lastnamed stroke, such steambeing thereafter returned to the engine-cylinder through the pipe bywhich it was supplied, and exhausted from the engine-cylinder in theordinary manner. The dilerence of area between the upper and lowersurfaces of the piston B causes the downward or forcing stroke to bemade, as is desirable, under a correspondingly greater eX- ertion ofpressure than that which ei'ects the upward or drawing stroke. Thelength of stroke of the piston and plunger, and consequently thequantity of water delivered at each stroke, may be reduced, as desired,by reducing the quantity of steam admitted to the cylinder by means of avalve, a4, located at any convenient position in one of the supply pipesleading to the ports of the cylinder A.

In cases where automatic regulation is desired, the same may be attainedby the employment of a loat, G, in a water-vessel, O', the level ot' thewater in which is maintained at a height corresponding with that of thewater in the boiler by pipes connecting the steam and water spaces oftheboiler with the upper and lower ports, c c', of the watcrves sel Orespectively: The float O is pivoted at top to the lower end of a rod,c2, passing through the cover of the water-vessel, and connected atitsopposite end to a balanced valve, c3, fitting a corresponding seat inthe supplypipe leading to the port c ofthe cylinder. The rising andfalling of the loat, accompanying variations in the water-level in theboiler, will effect coresponding movements in the valve c3, by which thesupply of steam to the cylinder A will be regulated in accordance withthe requirements of water-supply to the boiler.

My improvements embody the advantages of' reducing the duty of themoving members of the main engine, and, by the material simpliication ofmechanism involved in the suppression of all moving parts save a pistonand plunger, produce an effective and reliable pumping apparatus suitedeither to continuous or to intermittent action. I further attain theadvantage of economizing steam, for the reason that the steam-supply ofthe pump, being taken from that of the, cylinder and returned to andexhausted therewith, is automatically regulated by the movements of thepiston of the main engine-cylinder, and the quantity o1" steam employedto actuate the pump is at all times restricted to that which is requiredto furnish a supply of water to the boiler directly proportionate to thework performed under varying conditions bythe engine.

I claim as my invention and desire'to se cure by Letters Patentl. rlhecombination, with a steam-engine, ot a steam-pump having each end of itssteamcylinder connected by a pipe with one end of 2 5 cylinder receivingsteam at its ends by sup-VA ply-pipes from the ends of a steam-enginecylinder, of a regulating-valve located in one of 4o the supply-pipes,and a oat adapted to rise and fall in a containing-vessel incorrespondence with lvariations ot' the Water-level in'a steam-boiler,substantially as set forth.

B. BRAZELLE. Witnesses:

J. SNOWDEN BELL, CHAs. A. SAFFORD.

